SDDOT lowers I-90 speed limit west of Rapid City for Sturgis Rally
A temporary 65-mph limit, traffic signals and a U.S. 385 construction pause will affect travel through Rapid City during the 2026 Sturgis Rally.
South Dakota Department of Transportation
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Sioux Falls updates residents on major street, bridge and interchange construction
Sioux Falls and the South Dakota Department of Transportation say several major roadway, bridge and interchange projects are expected to reach substantial completion this fall, with August work planned for a new bridge connection to southbound I-29.
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SDDOT schedules Aug. 4 Rapid City meeting on Highway 16/Catron Boulevard interchange project
The South Dakota Department of Transportation will hold a public information meeting Aug. 4 in Rapid City on the Highway 16/16B/Catron Boulevard interchange project and work involving part of Promise Road.
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Rapid City’s redesigned Haines Avenue/I-90 interchange scheduled to open to traffic
South Dakota transportation officials said the rebuilt Haines Avenue interchange at Interstate 90 Exit 58 in Rapid City was scheduled to open to traffic Aug. 2.
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SDDOT to detail Rapid City U.S. 16 interchange project at Aug. 4 meeting
The South Dakota Department of Transportation will hold an Aug. 4 informational meeting on phased work at the U.S. 16, U.S. 16B, Catron Boulevard and Promise Road corridor in Rapid City.
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Temporary signals and reduced speeds planned around Rapid City for Sturgis Rally traffic
South Dakota transportation officials plan temporary traffic signals and reduced speed limits in Rapid City, Sturgis and the Black Hills from July 31 through Aug. 17 for 2026 Sturgis Motorcycle Rally traffic.